
TEKS.MATH.9-12.IV.D.2
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Mathematics
9th - 12th Grade
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20 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the Normal Range of the monthly salary of teachers if the average is $4,000.00 with a standard deviation of 3,000?
Tags
TEKS.MATH.9-12.IV.D.2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The speeds of cars on the highway have a mean of 95 km/h with a standard deviation of 5 km/h. What percentage of cars averaged less than 85 km/h?
.15%
2.35%
2.5%
18.5%
Tags
TEKS.MATH.9-12.IV.D.2
TEKS.MATH.9-12.V.B.1
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Researches found that boys playing high school football absorb an average of 355 hits to the head with a standard deviation of 80 hits during a season. What is the probability on a randomly selected team of 48 players that the average number of head hits per player is between 340 and 360?
Tags
TEKS.MATH.9-12.IV.D.2
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What type of correlation does this graph have?
positive
negative
none
all of the above
Tags
TEKS.MATH.9-12.IV.D.2
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The mean life of a tire is 30,000 km. The standard deviation is 2000 km.
Then, 68% of all tires will have a life between ___________ km and __________ km.
Tags
TEKS.MATH.9-12.IV.D.2
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
State whether you would use the central limit theorem or the normal distribution:
The weights of the eggs produced by a certain breed of hen are normally distributed with mean 65 grams and standard deviation of 5 grams.
What is the probability that one egg selected at random from a hen house will weigh more than 68 grams?
Tags
TEKS.MATH.9-12.IV.D.2
TEKS.MATH.9-12.V.B
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A recent survey found that out of 400 random American adults, 89% pay their bills on time. The margin of error in this survey was 2%. What is the interval of values in which the truth is likely found?
89% - 91%
87% - 89%
87% - 91%
388 - 402
Tags
TEKS.MATH.9-12.IV.D.2
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